bacitracin

bac·i·tra·cin

noun \ˌbas-ə-ˈtrās-^ən\

Definition of BACITRACIN

: a polypeptide antibiotic isolated from a bacillus (Bacillus subtilis or B. licheniformis) and usually used topically especially against gram-positive bacteria

Biographical Note for BACITRACIN

Tra·cy \ˈtrā-sē\ , Margaret American hospital patient. The antibiotic bacitracin was first identified in 1945 in wound drainage from Margaret Tracy.